condition mean min max ZT0-3 0.47681125 0.40026150000000005 0.553361 ZT4-7 0.480309 0.480309 0.480309 ZT8-11 0.581013 0.581013 0.581013 ZT12-15 0 0 0 ZT16-19 0.7669035 0.7669035 0.7669035 ZT20-23 0.6916145 0.6916145 0.6916145